Calendar



Feb. 11. 19.25. 1,526,885

A. P. VAN LOGHEM CALENDAR Filed Dec, 24. 1923 INVENTOR.

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waukee and State of Wisconsin,

Patented Feb. `17, 1925..

PATENT OFFICE.

ARNOLD P. VAN LOGHEM, OF MILWAUKEE, WISCONSIN.

CALENDAR.

Application led December 24, 1923. Serial No. 682,511.

To` all whom it may concern.'

Be it known that I, ARNOLD P. VAN Loemnvr, a citizen of the United States, and resident of Milwaukee, in the county of Milhave invented new and useful Improvements in Calendars, of which the following is a description, reference being had to the ac companying drawings, which are a part of this specification.

This invention relates to improvements in calendars and more particularly to an approximately perpetual form of calendar.

It is one of the objects of the present invention to provide a calendar which will not have to be discarded at the expiration of a year, but can be used for an indefinite length of time.

A further object ot' the invention is to provide a calendar of the class described which can be arranged to indicate the day of the week of any particular date.

A further object of the invention is to provide a calendar of the class described which is very easily manipulated.

A further object of the invention is to provide a calendar of the class described which is of very simple construction, is strong and durable, is inexpensive to manufacture, and is well adapted for the purpose described.

TWith the above and other objects in view, the invention consists of the improved perpetual calendar, and its parts and combinations as set forth in the claims, and all equivalents thereof. A

In the accompanying drawings in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a front view of the improved perpetual calendar;

Fig. 2 is view ot the rear section of the calendar; and y Fig. 3 is a sectional view taken in line 3 3 of Fig. 1.

Referring now more particularly to the drawings, it will be seen that the numeral 5 indicates the improved perpetual calendar, the same being approximately circular in shape and consisting of a front section 6 and a rear section Near the top Aof the :trontsection, an arcshaped portion 8 is printed or otherwise delineated, said portion being divided into seven sections 9. Each of said sections contains the names of one or more months of the year and all of the months appear. It shouldbe noted, however, that the months January and February appear twice and in different sections and the second delineation of said months as at 10 and 11, differ fromthe iirst delineation. Any distinctive means of marking the second appearance ot said months can be used and in the specific embodiment of the invention red ink has been utilized. Above each 0tsaid sections 9,.there is an aperture 12, the l purpose et which will be hereinafter explained.

On the front section 6, there is also print-ed the numerical designations of the days of a month. Said numerical designa.- tionsl are arranged in a manner similar to that of an ordinary calendar, as at 13, the

numbers being in rows of seven beginning at the left and continuing to the right and so on, through the number 31, thus torming five approximately horizontal rows and seven approximately vertical rows. Over each vertical row, there is an aperture 14, the purpose of which will later be explained.

The rear section 7 is circular in form. Said section contains the names of the days of the week, the days being arranged in a circle in consecutive order. Twenty-one days are so arranged, as at 15, making a total of three weeks. Arranged consecutively in circulartorm, as at 16, are a plurality of letters. As shown in the drawing, said letters range from A to U inclusive. However, the number of letters so required depends on the number of small discs 17 utilized. Said discs are revolubly fastened to the section 7 near the periphery thereof and each disc is divided into a plurality of quadrants 18, each quadrant having printed therein the number of a year. In the drawing twenty-one discs have been shown; therefore, but twenty-one of the letters shown at 16 are required, one letter representing each disc. In a calendar constructed as shown in the drawing and provided with twenty-one discs, a total of one hundred and twentysix years could -be covered by the calendar, inasmuch as each disc has printed thereon six different years. The calendar shown in the drawing, however, only includes one hundred years, ranfring from 1900 to 2000, as some of the quadrants 18 have been left blank.

Each of the sections 6 and 7 are provided with central apertures 19 and 2O and the section 7 has a screw member 21 located Within its aperture. A turn member 22 having a head member 22 threaded thereon.

passes through the aperture 19 and isconnected to the bearing member 21, as shown in Fig. 3. In this manner, the front and rear sections are held together, being spaced apart by a liller 21.. The turn member carries a pointer arm 23 and the parts are so arranged that a movement ofthe turn member will turn the pointerariii and also the rear section. The-rear section is prevented from undesired movement by a curved spring 24 adapted to lodge in circularly arranged,depressions 25 formed in the section 6.

A The operation of the calendar is as follows: The year desired may be selectedfroni tables 26 and 2,7 appearing on the front section, and adjacent the desired year a letter Will appear. The rear section should. then be rotated until the letter corresponding to the letterv adjacent the selected year appears in an aperture 28-formed on the front section. The appearance of said letter in the aperture indicates that the selected year Will be `found onv the Ydisc immediately above the aperture28. The disc should then be rotated u'ntil'the selected year appears in the aperture 12. The pointer arm 23 is next loosened so that it may be l independently brought `intocoincidence vviththe aperture 28 and is then again tightened and moved to the desired month, and, as Was explained,` the pointer and rear section are moved together. The resulting movement of the rear section Will' re-locate the arrangement ot' the days of the Weel; over the vertical rowsat 13 and the result. will rbe that the arrangen'lent 'ot' 'numbers and days of the week at 13 will presentv a complete and true vcalendar for theyear and month selected.

There is one exception to the aforementioned operation of the calendar and this exception occurs when the year selected Vis leap year and the month is January or February. The years on'the various discs which are leap years have a distinctive `de lineation from the other years, as at 29, anc inthe event of a leap year being selected the pointer should be turned to the Janui ary or LFebruary printed in red ink. The rest of the operation is the same as Was heretofore described.

It isobvious that the improved perpetual calendar can beso constructed as tol include an indelinite number of years. This is ac complished by filling'in the blank quadrants on the discs with the desired years.V Then it is merely necessary to arrange the years in the tables and list after them the respective let-ter designations oi their discs.

From the foregoing description it will be seen that vthe improved perpetual calendar is olf very simple and novel form, and is Well adapted for the purpose described.

`What l claim as my invention is:

l. A calendar, comprising a front section, and a rear section revolubly connected to the front section, said front section having thereon a plurality 'of divisions having thereon the names ot the various months, and the numerical designations ci the days of a month arranged in a ca lendrical manner, therebeingan aperture over each month division, and there also being seven apertures over the calendrical arrangement or' the numerical designations of the days ol" a month, and said rear section having thereon three sets oil the names ot the days of the Week, and a plurality of discs revolubly attac-hed to said section adjacentits periphery, each disc having thereon al plurality of different predetermined year designations, the year designations and the names of the days being visible through the apertures in thev frontfsection, and means whereby a disc having thereon a selected year designation may be loc-ated and arranged so that said year designation Will register With the aperture' adjacent thename ot a selected month.

2. A calendar, comprising a front section, and a rear section revolubly connected to the front section, said front section having thereon a plurality ot divisions having thereon the names of the various months, and the numeric-al designations ot.' the days of a month arranged in a calendrical manner, there being an aperture over the inonli divisions, and there being' an aperture over the calendrical :n'rangernent of the numerical designations or the days ci a month, and said rear section having thereon a plurality of sets of the naines oli the days of the Week, and a pluiulit)v oit movable members 'attacl'i'ed to the rear section adjacent its periphery, each movable member having thereon a plurality oiiditteren't predetermined year designations, the year designations andthe names ot the days being visible through the apertures in the trout section, and means whereby a n'i'ovanle member having thereon a selected yea' designation may be located and'arranged so that said year designation will appear through the aperture over the naine olf the selected month.

In testimony whereof, I afiX my signature.

ARNOLD P. VAN LOGHEM.

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